Being a Twin
From around 1915 to 1980, about 1 in every 50 babies was a twin, a rate of 2 percent, according to The Atlantic. By 1995, that rate was 2.5 percent, and in 2010, it was 3.3 percent. That means that nowadays, 1 in every 30 babies is a twin.
Parents explain that “two-thirds of the increase is likely due to the growing use of IVF,” while the rest is “mainly attributed to a rise in the average age women give birth,” since older women are more likely to conceive twins.
